Improvement in ice-cutting machines



l. HARRINGTON & S. CHAPMANl lceCutting Machi'nes. 2

Patented Feb. 24.1874.

a l 4 l n Attorneys.

UNITED J AOKSON I-IARRINGTON AND SIMEON A'. CHAPMAN, OF LONDON, CONN.

IMPROVEMENT IN ICE-CUTTING MACHINES.

Specication forming part of Letters Patent No. 147,934, dated February24, 1874; application filed July 30, 1873.

drawing and to the letters of reference marked thereon.

Our invention relates to such machines for cutting ice in which acircular saw is operated by chains from the driving-wheel shafts; andthe nature of our invention consists in the construction and arrangementof the saw-arbor, with its bearings and the devices for raising andlowering` the saw according to the thickness of the ice. It alsoconsists in the arrangement of adjustable side gages with the devicesfor raising and lowering the same, as will be hereinafter more fully setforth.

, In order to enable others skilled in theart to which our invention apertains to make and use the same, we will iw proceed to describe itsconstruction and o eration, referring to the annexed drawing which formsa part of this specification, and in which- Figure l is a plan view,Fig. 2 a longitudinal section, and Fig. 3 a rear end view, of ourmachine for cutting ice.

A represents the frame of our machine, constructed iu any suitablemanner, and containing, near the front end, a wheel-shaft or axle, B,and near the rear end a similar shaft or axle, B. In a full-sizedmachine these shafts or axles are to be placed, and turn in boxesattached to the frame A. The'front axle B has in the center a wheel, C,keyed or otherwise iirmly secured to it, while the rear axle B has awheel, C', at each end. rIhese'wheels G and C' C are all toothed ontheir edges, so as to take hold of the ice and revolve7 as the machineis moved forward. Between the wheelshafts B B is a countershaft,l), andsaw-shaft or arbor E, both running across the frame, and parallel withthe saw-shafts. Each of the wheel-shafts is provided, near one side ofthe frame, with a large pulley, G, and around these pulleys passes achain, b. The lower part of this chain passes over a pulley, a, on thecounter-shaft D, and under an idle pulley, d., attached to a stud on theinner side of the frame. This idle pulley is for the purpose of causingthe chain b to touch the circumference of the pulley a as far around aspossible, and cause the counter-shaft to revolve in the oppositedirection to the wheels O and C. On the counter-shaft D is a largepulley, G', connected, by another chain, b', with a pulley', c, on thesaw-shaft E, so as to cause the saw H on said shaft to revolve in thesame direction as the counter-shaft I) 5 or, in other words, in theopposite direction to the wheels and the movement of the machine. Allthe pulleys over which the chains b b pass are groovedcircumferentially, sufficiently deep to retain the chains on the same.rlhe saw-shaft E runs in boxes ffplaeed iu grooved guides I I, attachedto the inner sides of the frame A. The shaft E passes through twolevers, J J, which are placed loosely upon the rear axle B', they havingeach an oblong slot where said axle passes through them; and their rearends are bent and united together, as shown in Fig. l. Between the rearends of the levers J J is pivoted a nut, t', through which passes ascrewshaft or crank-screw, h, the lower end of which turns in a plate orbox, fi', pivoted between two ears, extending from the rear end of theframe A.

By turning the crank-screw h the saw H is raised and lowered at will,and held in any position necessary according to the thickness of ice. Oneach side of the fralneAare hinged or pivoted two or'more arms, m m,upon which is placed a gage, K, said gage having hubs a a, through whichthe arms on m pass, and setscrews m m'through said hubs secure the gageon the arms.

On the rear end of the frame A, near each side, is pivoted a bentlever,L, the lower front end of which is underneath the rear arm m on thatside of the machine. By the use of these levers L L, the gages K K maybe raised up from the ice or lowered to the same; and when raised upthey are held in that position by the upper ends of the levers Yentering notches y y in a cross-bar, P, on the frame.

I-Iaving thus fully described our invention,

what We claim as new, and desire to secure by screws w x, lever L, andnotched bar P, ali

Letters Patenuissubstantially as and for the purposes herein 1. Thecombination of the saw-shaft E, boxes set forth. f f guides I I, leversJ J crank-screw h, pivoted nut i, and pivoted bex i', all constructed land arranged t0 operate substantially as and v for the purposes hereinset forth. Witnesses:

2. The combination of the hinged or piv- F. P. KENYON,

oted arms m m, gege Kwth hubs n n and set- LEWIS' Y. CARROLL.

